baber/WOPTO huggingface dataset:
Patent GB-2053713-A (GB)
Title: A process for the preparation of Fischer-Tropsch catalysts
IPC: C07C67/00
Filed: 1980-07-11
Abstract: A process for the preparation of Fischer-Tropsch catalysts, containing 30-75 pbw iron and 5-40 pbw magnesium per 100 pbw alumina by impregnating an alumina carrier with one or more aqueous solutions of salts of iron and of magnesium, followed by drying the composite, calcining it at a temperature of from 700 to 1200 DEG C and reducing it.
Patent GB-2055598-A (GB)
Title: Vibratory screening apparatus for screening liquids
IPC: B01D35/20
Filed: 1980-07-21
Abstract: A vibratory screening machine for separating solid particles from liquid comprises a fine mesh screen (30) which includes an inclined region extending upwardly to a discharge edge (34) over which solid material (36) separated by filtration can pass. Vibration of the screen (30) causes the solid particulate material to move towards the discharge edge (34). The screen (30) forms the base of a spring-mounted reservoir with a weir (46) at the opposite end to the discharge edge (34) and is slidable in and out of the reservoir to provide for cleaning and/or replacement (Fig. 5 not shown). One or more screens of similar design may be located above the main vibrating screen and the liquid to be screened is fed to the top screen and some liquid flows over weirs (46) to each lower screen. <IMAGE>
Patent GB-2058055-A (GB)
Title: Herbicidal substituted diphenyl ethers
IPC: A01N37/48
Filed: 1980-08-08
Abstract: The herbicidal diphenyl ethers are of the general formula I   <IMAGE>  wherein:  A is halogen, cyano or nitro;  X is hydrogen or halogen;  Y hydrogen, halogen, cyano, trifluoromethyl, or C1-4 alkyl;  Z is oxygen or sulfur; R is C1-3 alkylidene or monosubstituted C1-3 alkylidene, wherein the substituent is selected from C1-4 alkyl, C1-4 oxyalkyl or C1-4 hydroxyalkyl; and R<1> is hydrogen, alkyl or C1-10 alkoxy, C3-8 cycloalkyl, an agronomically acceptable ionic species, phenyl, or mono-, di-, or trisubstituted phenyl wherein the substituent(s) is (are) selected from halogen, C1-10 alkyl or C1-10 alkoxy, cyano, nitro, or trifluoromethyl, or an optical or stereo isomer thereof.
Patent GB-2058564-A (GB)
Title: Pharmaceutical compositions comprising anti-osteoporotic agents
IPC: A61K31/35
Filed: 1980-09-05
Abstract: Pharmaceutical compositions for treating mineral resorptive states comprise an anti-osteoporotic agent or an anti-inflammatory steroid and disodium cromoglycate or a biologue thereof. The osteoporotic agent may be an anabolic or estrogenic steroid, vitamin Don its metabolites, phosphorus-containing agents, inorganic fluoride-containing agents, calcium salts or calcitonin.
Patent GB-2069355-A (GB)
Title: Vibratory agitating apparatus
IPC: B01F11/02
Filed: 1981-01-15
Abstract: Apparatus for maintaining an oil bath (6) at a uniform temperature, incorporates an agitator (10) for promoting flow within the oil bath thereby to reduce thermal gradients. The agitator (10) comprises a resilient strip (20) that is mounted at one end (21), above the oil level, to depend vertically within the oil bath. At its other end (25) there is mounted a permanent magnet (26) that interacts with the magnetic field established by a fixed electromagnet (40) mounted beneath the oil bath (6). The electromagnet (40) is supplied with alternating current thereby producing an alternating magnetic field that causes the agitator strip (20) to vibrate and produce flow within the oil (5). <IMAGE>
Patent GB-2071480-A (GB)
Title: A domestic coffee roaster
IPC: A23N12/10
Filed: 1981-01-30
Abstract: A domestic coffee roaster (40) comprises a container (57) having an open end (63), support (41, 43, 44, 45) for supporting the container (57) in a horizontal roasting position, an electric motor (58) for turning the container (57) to enable coffee beans to be tumbled therein, a heater (59) for roasting coffee beans as they are tumbled in the container, and handle (49-56) to enable the container (57) to be tilted to facilitate loading of coffee beans into, or dispensing of coffee beans out of, the container (57) through its open end (63).   The heater (59) is preferably an electric heater element positioned inside, and in the upper part of, the container (57) but may be a gas burner placed outside and below the container. <IMAGE>
Patent GB-2072261-A (GB)
Title: A fuel injection system for internal-combustion engines
IPC: F02M45/10
Filed: 1981-02-17
Abstract: The fuel injection system has an injection pump 3 and a reservoir 4 from which fuel is supplied via feed lines 16 to injection nozzles 5 in each of the cylinders of the engine 1. Each feed line 16 also constitutes the input 15 of a logistor 25 which also has a control input 19. The control input 19 is connected to an electronic unit 6 so as to be responsive to various parameters such as engine speed 7, throttle opening 8, air temperature or pressure 10, 9 or road speed 11. The unit 6 gives a square-wave output voltage, whose frequency is dependent of the parameters, which controls the individual logistors 25 to give an intermittent flow of fuel through the logistor 25 and hence the injector nozzle 5. A mechanical/hydraulic system replacing the unit 6 is also disclosed. <IMAGE>
Patent GB-2098717-A (GB)
Title: Candle extinguisher
IPC: F23Q25/00
Filed: 1981-02-24
Abstract: A candle extinguishing device comprising a rectilinear length of rigid hollow tubing (12), a resilient hollow bulb (14) secured directly at one end of the tubing, an angled extension piece (16) of tubing secured to the other end of the rigid tubing, and a nozzle (18) provided at the free end of the extension piece, manual pressure on the bulb sufficient to collapse the bulb causing a jet of air to be directed from the nozzle to extinguish the candle. <IMAGE>
Patent GB-2086869-A (GB)
Title: Reducing water demand of gypsum plaster
IPC: C04B11/024
Filed: 1981-02-27
Abstract: The water demand of gypsum plaster is reduced by adding a water demand reducing agent to powdered gypsum rock before or during calcination. The preferred water demand reducing agent are natural or synthetic polymeric dispersing agents, such as sulphonated naphthalene- formaldehyde condensates or sulphonated melamine-formaldehyde condensates. Ligno sulphonates can also be used for this purpose.
Patent GB-2074907-A (GB)
Title: Drill shaft gripping mechanism
IPC: E21B7/02
Filed: 1981-04-16
Abstract: A system for drilling holes in the roof of a mine has a drill shaft gripping mechanism arranged to periodically grip the drill shaft for concurrently applying torsional drive and drilling thrust. The gripping mechanism includes a circumferential array of full axial length gripping segments (130), which are forced inwardly by an overlying flexible sleeve (76) hydraulically actuated to grip the shaft. The gripping segments that are attached to a drive system by torque and thrust transmitting coupling pins (94, 118) and square collars (104, 132) that permit individual radial movement of each gripping segment (130) relative to the drive system at the coupling pin locations. The segments are divided by helical gaps or are straight longitudinal segments. The latter have returning springs and have lugs at each end fitting into recessed end rings. <IMAGE>
Patent GB-2077025-A (GB)
Title: Nuclear reactor constructions
IPC: G21C1/03
Filed: 1981-05-13
Abstract: A liquid metal cooled nuclear reactor of the kind wherein the fuel assembly is submerged in a pool of coolant contained by a primary vessel housed in a concrete vault. The roof of the vault carries heat exchangers which are immersed in the pool of coolant, the lower ends being hydraulically damped against oscillation caused by seismic disturbances.
Patent GB-2077322-A (GB)
Title: A connecting bracket for a do- it-yourself wall or ceiling cladding system
IPC: E04B9/06
Filed: 1980-05-30
Abstract: A connecting bracket 34 for connecting two tubular supports 1a and 1b of a do-it-yourself wall or ceiling cladding system in which the bracket is in the form of a retaining leg 35 which can be fastened to the wall or ceiling having two lugs 38 which at their free end project axially in line with each other, one of the lugs being laterally limited by two parallel flanges 39 having approximately quadrilateral sides and corresponding approximately to the inside diameter of the tubular supports, and free corners of which are provided with rounded areas 40, the intermediate part 36 remaining between the supports being of such a design as to provide a sideways displacement of fixing clips across the intermediate part. <IMAGE>
Patent GB-2079817-A (GB)
Title: Well drilling system
IPC: E21B19/14
Filed: 1981-06-10
Abstract: A well drilling system designed to eliminate the usual rotary table, kelly and kelly bushing, includes a drilling unit 12 having a tubular part connectable to the upper end of the drill string 15 and a motor for driving that tubular part rotatively, with the drilling unit 12 being mounted by a guide structure for vertical movement, and in addition being mounted for movement transversely of the axis of the well from the normal drilling position to at least one laterally offset position. Preferably, the drilling unit is movable to two different laterally offset positions, in one of which the drilling unit is above a mousehole location to pick up or release a pipe section, and in the other of which the drilling unit is at an inactive location at which it may remain during a trip of the drill string into or out of the well. <IMAGE>
Patent GB-2102484-A (GB)
Title: Lockable handle device for a casement closure
Inventor: DALEY ERNEST CHARLES
IPC: E05C3/04
Filed: 1981-06-12
Abstract: The invention relates to a lockable handle device 1 which has a lock (not shown) in a seating 4 and a nib 2 for securing the device in a fully closed position and a nib 7 for securing the device in a ventilating position, the nib 7 being secured to the nib 2 by a rivet 10 defining a pivot axis about which the whole device can turn. The lock can lock the device in the fully closed and ventilating position. <IMAGE>
Patent GB-2095718-A (GB)
Title: Struts for mine roadway supports
IPC: E21D11/28
Filed: 1981-08-04
Abstract: A mine roadway support strut for connecting adjacent mine roadway supports comprises a bar 1, a spacing tube 7 and end fittings which are securable to flanges of the adjacent mine roadway supports. The fittings may comprise L or U shaped brackets only (e.g. as 6, 8 and 9) or may include a hook (3) at the end of the bar. A hooked bar is screw threaded at one end. Other bars (e.g. Figs. 5 and 6 not shown) may be screw threaded at both ends. <IMAGE>
Patent GB-2107827-A (GB)
Title: Valves
Inventor: CURRALL WILLIAM JAMES PETER
IPC: F16K41/10
Filed: 1981-10-15
Abstract: A valve for varying the rate of flow of fluid through a duct 10 consists of a member 36 which can be moved transversely across the duct. The member is connected to a flexible diaphragm 20 which surrounds the member and which is sealed at 24 to the outer wall of the valve housing. The possibility of leaks occurring between the movable member and the valve housing is therefore removed. <IMAGE>
Patent GB-2089189-A (GB)
Title: Continuous pneumatic tobacco feed
IPC: B65G53/60
Filed: 1981-12-09
Abstract: Air is conveyed pneumatically to and through a tobacco feed chute (4) by continuously extracting air from a region (17) in the feed chute and continuously applying air upstream of said region (at 20) in the direction of movement of the tobacco. The feed chute may include a seal or valve comprising at least one roller (9) defining a throat (11) in the feed chute, the or each roller being rotatable such that in the throat the or each roller surface moves in the same direction as the tobacco, a plurality of vanes (12) mounted on and displaceable radially with respect to the or each roller means (15) for controlling the radial displacement of the vanes such that they change from being extended in a region away from the throat to being fully retracted in the throat so as to draw air from downstream of the seal, between the vanes, to upstream of the seal, and flow restricting means (20) for the or each roller for accelerating the drawn air into the throat from an upstream position. <IMAGE>
Patent GB-2091536-A (GB)
Title: Hollow jewellery articles
IPC: A44C15/00
Filed: 1982-01-22
Abstract: A method of making hollow jewellery articles 31 involves engraving a plurality of lines 20, 21, 22, 23 on a sheet metal blank so that metal is removed from one face of the blank and so that metal projects slightly from the opposed face of the blank. The blank is then folded along the engraved lines and treated with solder, which flows into the fold lines where the metal has been removed and rigidifies the folds. In a preferred embodiment, the folding operation brings two edges 11 and 12 of the blank together, these edges being secured by the solder. <IMAGE>
Patent GB-2099705-A (GB)
Title: Pulse generator for pain blocking bandage
IPC: A61N1/34
Filed: 1982-03-25
Abstract: A self-contained, portable, pain blocking bandage has a pulse generator 48, 50, 52 which applies repetitive pulses to an output stage 58 via a pulse buffer and shaper 54, the output stage including a positive feedback circuit 66, 68 which causes the patient to receive a burst 78 of multiple pulses for each pulse produced by the pulse generator 48, 50, 52. Adjustment of a resistor 66 in the feedback circuit varies the number of pulses in each burst. The output amplitude is selected by a potentiometer 74 and is indicated to the patient by a piezoelectric audio transducer 88. As the bandage is placed on the skin a switch 18 is actuated so that a transistor 46 turns on to apply power to the pulse generator and following circuit stages. <IMAGE>
Patent GB-2105122-A (GB)
Title: A DC voltage converter
Inventor: MORLING MICHAEL ALLEN
IPC: H02M3/158
Filed: 1982-06-29
Abstract: The converter includes in one rail a transistor TR2 (or a thyristor, FET or GT0 device), a choke Land a diode D1 in series between a D.C. source and an output. A blocking diode D2 is connected between the return rail and the junction between the transistor TR2 and choke L. A second transistor TR1 (or a thyristor, FET or GTO device) is connected between the return rail and the junction between the choke L and diode D1. A capacitor C is connected across the circuit output. The switching of the transistors is controlled by respective drive circuits. in one mode the converter steps-up the input voltage by maintaining transistor TR2 continuously conductive and repetitively turning transistor TR1 on and off. In another mode the converter steps-down the input voltage by maintaining transistor TR1 continuously non-conductive and repetitively turning transistor TR2 on and off. <IMAGE>
Patent GB-2125239-A (GB)
Title: A three phase supply synthesis arrangement
Inventor: BROWN KENNETH ROBSON
IPC: H02M7/5387
Filed: 1982-08-06
Abstract: The arrangement comprises switching means 27-29 across a d.c. supply bus 25, 26 for each phase, the switching means having series connected switches 41, 42 conditionable to be closed alternately throughout the synthesised cycle so that a junction point 30, connected to the load, is maintained at the higher bus potential for one-third of the cycle, maintained at the lower (ground) bus potential for a non- contiguous one-third of the cycle, and varied from the higher to lower bus potential, and vice versa, in intervening one-sixths of the cycle by rapidly changing the switch states to vary the average junction potential. The conditioning of each switching means is controlled by a ROM 45 containing the switch conditions for points throughout the cycle and accessed sequentially by a counter 46 to synthesise a signal having a trapezoidal waveform approximating to a sinusoidal signal (Figure 3) but because the switching means spends a large part of each cycle without changing state there are a few power losses. To approximate more closely to a sinusoidal signal (Figure 4) without increasing switching activity the ROM 45 also stores data read synchronously with the switching data to be converted to an analogue crest function which modulates the level of the higher bus potential for all phases. <IMAGE>
Patent GB-2127087-A (GB)
Title: Locks for sliding doors or windows
Inventor: BUCKLEY JOHN EDWARD
IPC: E05B65/08
Filed: 1982-09-16
Abstract: A lock for a sliding door or window comprises a first elongate strip 10 for fixedly mounting along the vertical end edge of the locking stile of the door or window, a second, movable strip 11 mounted on the first strip for limited longitudinal movement relatively thereto between locked and unlocked positions, operating means 12 for effecting said relative longitudinal movement, two headed longitudinally-spaced locking screws 14 projecting outwardly from the second 11 in the general plane of the door or window, a retaining strip 17 for mounting on the fixed frame 18 of the door or window, which retaining strip is formed with keyhole-shaped apertures 16 to receive the projecting locking screws 14 respectively, whereby the lock may be engaged by passing the heads of the screws 14 through the larger portions of the apertures while the second elongate strip is in the unlocked position, and then moving the second elongate strip 11 to the locked position in which the shanks of the screws enter the narrower portions of the apertures in the retaining strip, thus preventing withdrawal of the screws from the retaining element. <IMAGE>
Patent GB-2128636-A (GB)
Title: Silicon-aluminium alloy metallization of semiconductor substrate
Inventor: MALCOLM ALASTAIR JAMES
IPC: H01L21/285
Filed: 1982-10-19
Abstract: The substrate is heated eg to a temperature of about 200 degrees centigrade and a layer of pure aluminium is applied to the surface. The first aluminium layer has a thickness of up to about 75% of the total desired final film thickness. The substrate temperature is then lowered to e.g. about 100 degrees centigrade. A second layer comprising aluminium alloy with 1-2% silicon is applied over the pure aluminium layer at this second temperature. The method minimises thinning over substrates having steep steps in their surfaces, minimises the amount of silicon diffusion out of and aluminium diffusion into the substrate without silicon precipitation at the substrate-metal interface. Heating during subsequent process steps of patterning, passivating and sintering redistributes the silicon to provide on the semiconductor substrate surface a layer of aluminium having a fairly uniform concentration of silicon.
Patent GB-2111775-A (GB)
Title: Laminated magnetic bubble device
Inventor: SAKURAI YOSHIFUMI
IPC: G11C11/14
Filed: 1982-10-19
Abstract: The laminated magnetic bubble device is composed of a substrate 10, a thin magnetic film 11 having low coercive force and vertically oriented anisotropy which can allow easy generation and erasure of a magnetic bubble,and a thin magnetic film 12 having high coercive force and vertically oriented anisotropy which will not be affected by a magnetic field of low level used for generating the magnetic bubbles in the thin film 11 of low coercive force. The high coercive force film 12 is divided into regions such as stripe domains 13, 14 with alternating directions of magnetization to prevent improper movements of bubble domains 16 in the low coercive force film. <IMAGE>
Patent GB-2117520-A (GB)
Title: Fuel gauging system
Inventor: CLINTON PETER
IPC: G01F23/26
Filed: 1983-03-10
Abstract: The system has a capacitive probe (6) mounted in a fuel tank (5) and supplied with an alternating voltage Vs from a drive unit (2). The output of the probe (6) is rectified by a diode (8) mounted in the tank, prior to supply to a measuring unit (3). The voltage VD across the diode (8) varies with temperature and is measured periodically by reducing the input voltage Vs by a known factor X. The voltage VD is calculated by the measuring unit (3) from the two output currents I1 and I2 produced respectively at the two different voltages Vs and Vs/X. The capacitance and hence the depth of fluid is calculated using the known voltage VD across the diode (8). The drive unit (2) has a transformer (210) that is used to reduce the voltage periodically by switching between different tappings of its secondary windings. <IMAGE>
Patent GB-2118265-A (GB)
Title: Apparatus for tightening and fastening a securing band
Inventor: BARTZICK GERD
IPC: B65B13/30
Filed: 1983-04-06
Abstract: Apparatus for tightening a securing band around a package and for connecting the overlapping ends of the securing band 10 by a fastening and for severing the part of the securing band leading to the supply reel which is not required for the strapping which is being applied, wherein the cutting device comprises a notch cutter 28 actuatable with the upper punching tool 17 and a counterplate 29 and is arranged between the fastening device and the tightening device, wherein the counterplate of the cutting device serving as a support for the overlapping ends of the securing band and cooperating with the notch cutter in the direction of movement of the notch cutter includes a concave depression 31 as a free space running transversely of the securing band, in which the overlapping ends of the securing band, which are secured at one end by the fastening device and at the other end by the tightening device, are capable of curving downwardly by means of the notch cutter out of the plane of the band, in order to increase the tension prevailing in the upper end of the band and so as to achieve a separating tension necessary for severing the securing band at the notched position. <IMAGE>
Patent GB-2126769-A (GB)
Title: Dust proofing covers of record players and tape recorders
Inventor: HOLL RUPERT
IPC: G11B33/02
Filed: 1983-04-11
Abstract: Any gap between the cover and the casing of a record player or tape recorder is provided with sealing tape to keep out dust. The sealing tape may be conductive and may have an adhesive surface, other than that required for attachment, which collects dust should it manage to get through the seal to the interior.
Patent GB-2140638-A (GB)
Title: Loudspeaker drive arrangements
Inventor: TORSELLI JULIAN VITTORIO
IPC: H03F3/26
Filed: 1983-05-24
Abstract: To avoid using a centre-tapped loudspeaker or transformer, a loudspeaker drive arrangement has a conventional loudspeaker (26) connected between output electrodes of output transistors (TR1, TR2) receiving split input signals from a polarity-splitting amplifier (10). When one of the transistors is active (say TR1) the output electrode of the other (TR2) is connected via a respective switch (TR4) to the supply voltage rail (18). A switch control means (28) preferably in the form of two high gain differential amplifiers responds to whichever of the output transistors (TR1, TR2) is active, to make the other one of the switches (TR3, TR4) conductive. The loudspeaker (26) thus receives a peak-to- peak voltage which may be twice the supply voltage. <IMAGE>
Patent GB-2134007-A (GB)
Title: Method for coating adhesives and coating apparatus therefor
Inventor: KURASHI KOICHIRO
IPC: B05C3/09
Filed: 1984-01-11
Abstract: The present invention relates to a method for coating adhesives and a coating apparatus for practicing this method. Melton dumbbells for tennis balls are coated in laminar form with an adhesive at the side thereof. There has not previously been a suitable method to coat them uniformly. The present invention provides a method for coating adhesives which comprises dipping one side of a laminar pack 6 of the articles to be coated which are placed on a conveying means into a first adhesive bath 5 and then dipping the other uncoated side of the pack into a second adhesive bath 5, followed by drying the laminar pack of coated materials. The present invention also provides a preferred adhesive coating apparatus for practicing this method. The present method can be applied to the coating of adhesives on the side of other laminar sheet packs. <IMAGE>